Nemorimyza posticata
(Meigen, 1830)
Nemorimyza posticata is a small leaf-mining fly in the Agromyzidae, measuring 2.5–3 mm in length. The exhibits in abdominal coloration: females have a black with the two terminal segments brown, while males show a dark base with the remainder yellow. It is distributed across the Palearctic region, with confirmed records from Belgium. The larvae create mines in the leaves of several Asteraceae .
Pronunciation
How to pronounce Nemorimyza posticata: //nɛməˈɹɪmɪzə pəʊˈstɪkətə//
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Identification
Distinguished from similar Agromyzidae by the combination of brilliant black , sparse acrostichal bristles in 7–8 rows, yellow knees on otherwise brownish black legs, and whitish yellow knob. in abdominal pattern aids identification: females show black with brown terminal segments, males show dark base with yellow remainder. Small size (2.5–3 mm) and specific associations with Solidago, Aster, Baccharis, and Erechtites may assist in field recognition.
Images
Appearance
Small fly, 2.5–3 mm in length. Interocular space matte black; lunule soft black. and palps black. brilliant black. Acrostichal bristles sparse, arranged in 7–8 rows. Legs brownish black with yellow knees. knob whitish yellow. in : female abdomen black with two terminal segments clear brown; male abdomen with dark base, remainder yellow.
Distribution
Palearctic region. Confirmed present in Belgium (Flemish Region, Walloon Region, Brussels-Capital Region).
Diet
Larvae mine leaves of Solidago, Aster, Baccharis, and Erechtites (Asteraceae). feeding habits unknown.
Host Associations
- Solidago - larval
- Aster - larval
- Baccharis - larval
- Erechtites - larval
Life Cycle
Larval stage is a in Asteraceae plants. Specific details of , pupal, and longevity unknown.
Ecological Role
Larval leaf mining may influence leaf physiology and nutrient cycling in Asteraceae plants. Potential role in plant-herbivore interactions within containing Solidago, Aster, Baccharis, and Erechtites.
Similar Taxa
- Other Nemorimyza speciesSimilar size and characteristics; distinguished by specific abdominal color patterns, bristle arrangement, and associations
- Other Agromyzidae leaf minersShared leaf-mining habit; distinguished by combination of black , yellow knees, whitish knob, and specific plant
More Details
Taxonomic note
described by Meigen in 1830. GBIF records indicate presence in Belgium with specific regional distribution data available.